Ready-to-lay composition roofing.



W. O. EDWARDS, JR.

READY TO LAY COMPOSITION ROOFING.

APPLICATION FILED 00129. 1912.

Patented Dec. 30, 1913.

2 BHEET S-SHEET 1.

0. EDWARD, JR. READY TO LAY COMPOSITION ROOFING.

APPLICATION P'ILED 0013.9, 1912.

Patented Dec. 30, 1913.

2 SHEETS-SHEET 2.

INVENTEIR WITNESSES WILLIAM c. nnwnnns, an, or K NSAS CITY, rssounr.

I BEAIDY-TO-LAY COMPOSITION ROOFING.

Specification of Letters Patent.

Patented Dec. 30, 1913;

Application filed October '9, 1912. I Serial No. 724,743.

To all whom it may concern Be it known that I, WILLIAM G. EDWARDS, Jr.,-a citizen of the United States of America, .residing at Kansas City,the county of Jackson and State of Missouri, have invented certain newand useful Improvements in Readyto-Lay Composition Roofing; and I dohereby declare that the following is a full, clear, and exactdescription of the invention, such as will enable others to make and usethe same, reference being had to the accompanying drawings, forming apart of this specification. The expression ready to lay roofing isapplied by me to a built up composition com posed of one or more layersof such body materials as wool felt, asbestos felt, canvas, burlap,paper and the like, the said layers being saturated and'cementedtogether by the agency of some cementitious material such as asphalt,pitch, tar, etc. Such roofing being factory fabricated, can be producedof an even grade and of high character. The value of this type ofroofing lies in the fact that it is easily handled and laid by unskilledmechanics, and can be secured from stock. However ready to lay roofingsare open to the serious objection that they are not continuous instructure. Where the sheets are lapped at sides and ends, and nailed tothe roof sheathing, in the course of time, cracks or openings appear inthe lap through which water penetrates causing damage and loss. Alsoready to lay roofing requires about ten per cent. extra material persquare in order to form the said lap, which therefore increases the costa corresponding. amount. The present type of lap also forms a ridge onthe roof surface obsructing the free flow of the water.

The principal objects of this invention are: The factory fabrication ofroofing materials in long strips, adapted to be transported in'rolls andapplied to roof surfaces to produce a continuous roofing surface. Thefabrication of ready to lay roofing in strips or sheets having areinforcing flap at each edge. To secure a flat continuous joint betweenadjacent strips of ready to lay roofing materials. To effect a saving inthe quantity of material necessary to cover a surface by doing away withthe present waste of material at the lap. To form a joint betweenadjacent sheets of ready to lay roofing, which joint will be strongerand more waterproof than the body of the rooflng sheet. 1 1

The invention consists'in the novel construction and combination ofparts such as Wlll be first fully described and then specificallypointed out in the claims;

In the drawings, Figure 1. shows a vertical sectional view taken throughmy improved three'ply ready to lay roofing. Fig. 2. shows a verticalsectional view taken throughmy improved four ply ready to lay roofing.Fig. 3. shows a vertical sectional view taken through my improved fiveply ready to lay roofing. Fig. 4.. shows a vertical sectional view takenthrough the joint of adjacent sheets of my four ply roofing seen in Fig.2. Fig. 5. shows a vertical sectional view taken through the joint ofadjacent sheets of my five ply roofing seen in Fig. 3. Fig. 6. shows avertical sectional view taken through the joint of adjacent sheets of mytwo ply roofing, when formed like the two upper ply seen in Figs. 1, 2and 3. Fig. 7 shows a perspective view of a fragmentary portion of aroof surface covered with my three plyready to lay roofing seen inFig. 1. showing the method of forming the continuous joint betweenadjacent sheets of said roofing.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawings.

Referring to Fig. 1. Layers of wool felt or similar body material, 10,12 and 13 are seen joined together by films of a cementitious material,11, such as asphalt. The base layer 10 and the middle layer 12 areoffset with respect to each other to form at opposite edges, theextended portions 14.-15 and 16--17 of said base and middle layers. Theupper layer 13 extends beyond the edge 14.-18 of the middlelayer 12 toform an under flap portion 18-20; also at the op posite edge, an upperflap portion 19-21 of said upper layer .3. is formed, said flap beingfree from the marginal portion 1719 of the middle layer. This upperlayer may be covered with a coating'22 of a cementitious substanceintowhich may be incorporated anydesired surface material such as gravel,feldspar, quartz, mica, etc. Between the points 20 and 23 however suchcoating 22 is preferably bmitted. The office of the extended portions14-915 and 16-17 of the base and middle layers and of the under flap 18.-20 and upper flap 19-21 of titious coating 11 is applied to the uppersurface of this layer 12 of sheet B between the points 17 and 19, theunder flap 18- 20 of the upper layer 13 of the sheet A is then pressedfirmly down upon the coated parts 1719 of sheet B. A cementitiouscoating 11' is next applied to the upper surface of layer 13 of sheet Abetween the points 20-23 and the upper flap 1921 of the upper layer 13of the sheet B is pressed firmly down upon said coated parts 2023 of theupper layer 13 of sheet A, and the edge 21 is coated with a-cementitiouscoating 11", thus completing the formation of a continuous joint betweenthe sheets A and B. As seen in Fig. 7. in the upper part thereof, aportion of the layer 12 of sheet B between the points 17 and 19 iswholly removed to expose'the coating 1 1 and the parts 14.15 of the baselayer 10 of sheet A. The other parts'used to form the joint are exposedfor a full understanding of the methods of forming the joint. At 25 willbe seen a nailhead, the said nail being driven through the parts 13 and10 of sheet A, and the part 12 of sheet B, down and into the sheathing24:.

In Figs. 2 and 4, the middle layer is formed as in Fig. 1, but with twolayers- 12 cemented together at 11. The base layer likewise is formed asin Fig. 1'. but-given a protective coating 11 over its under surface.

In Figs. 3 and 5, the middle layer is formed identical to the'middlelayer in Fig.

2. just described. .The base layer being composed :of two layers of 10cemented to.-

gether at 11. As will be seen by reference to the variouscross-sections, by meansof my invention a continuous joint is formedbetween adjacent sheets of ready to lay roofing:

Since the base and middle layers are formed of equal area and ofiset thedistance 14-15, there is no loss of material at the joint except thatrequired to form the upper flap 1921'. The upper flap 19-21 of sheet Bdoes not appreciably thicken the roofing at the joint, so that for allpractical purposes a flat. joint is secured. The upper flap 1921 and,under flap 1820 cover the joint between the abuttin ends of the middlelayers, 12. If desired the parts 1719 and 1820 can be lengthened so thatboth the upper flap 1921 and-underflap 182 0 will cover the jointbetween the abutting versely or longitudinally-with the adjacent.

roofing sheets.

My invention'is. applicable to other uses than roofing, being valuablein such other uses as for instance the waterproofing of foundations,tunnels and linings.

Such other modifications may be employed as are within the scope of theappended claims.

Having described my invention what I now claim as new and desine' tosecure by Letters Patent is:

1. A ready to lay roofing comprising a built up composition composed ofupper, middle and baselayers of body materials, cementitiously bondedtogether over a major portion of their surfaces, the said base andmiddle layers being offset, with respect to each other, to form atopposite edges extended portions of said base and middle layers; theupper layer covering both base and middle layers, the edges of saidupper layer comprising free flap portions, unattached to said underlayers.

2. In a roofing structure composed of adjacent sheets A and B of builtup ready to lay roofing, each sheet comprising la ers of bodymaterials,-cementitiously bonde to-- gether over a major, portion oftheir surfaces, the upper body layer bein extended a short distancebeyond one e ge of the under layer to form an under fla portion of saidupper body layer, the said upper' layer being uncemented to a marginalportion of the under layer at the opposite edge thereby forming an upperflap portion of said upper body layer; a continuous joint.

being formed between said sheets of roofing, in whichthe under layer ofsheet B abuts the under layer of sheet A, the under flap of sheet Acovering. the cementitiously coated marginal edge ortion of the underlayer of sheet B, sai under flap portion of sheet A being cementitiouslycoated andcovered by the u per flap portion of sheet B.

3. In a roofing structure composed of adjacent sheets A and B of builtup ready to lay roofin each sheet comprising upper,

middle an base layers of body materials, cementitiously bonded .togetherover a major portion of their surfaces, the said base and middle layersbeing ofi'set with respect to each other to form, at opposite edges,ex-' tended portions of said base and middle layers, the said 11 perlayer being extended a short distance eyond one edge of said middlelayer to form an upper flap portion of said upper layer, and said upperand middle layers at the opposite edge being uncemented together,thereby forming an upper flap portion of said upper body layer; acontinuous joint being formed between said sheets of roofing, in whichthe extended portion of the middle layer of sheet 13 abuts the middlelayer of sheet A and covers the cementitiously coated extended sheetcoate portion of th under flap portio tended portion 0 B, and the upperlayer of sheet B (1 under flap portion of sheet A.

" Witnesses W. H. Loomis, J r., J. C. SEARLEB.

e base layer of sheet A, the n of the upper layer of A covers thecementitiously coated exis f the middle layer of sheet flap portion ofthe upper covers the cemen-titiously 'Correctlon in Letters Patent No.1,083,243.

It is hereby certified that in Letters Patent No. 1,0E !,243, grantedDecember 30, 1913, upon the application of William C. Edwards, Jr., ofKansas City,

Missouri, for an improvement in Ready-To-Imy Composition Roofing, anerror appears in the printed specification requiring correction asfollows: Page 3, line 3,

for the word upper read under; and that the said Letters Patent shouldbe read with this correction therein that the same may conform to therecord of the case in the Patent Oflice.

Signed and sealed this 20th day of January, A. D., 19 14.

[emu] J. T. NEWTON,

Acting Commissioner of Patents.

